7.2 Flashcards

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1
Q

Insolation

A
Depends on latitude 
Specific characteristics of spheres 
Scattered by collisions 
Earth soul be cooler around -20 degrees 
Water main contributed to natural greenhouse effect
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2
Q

Scattered insolation

A

Some returns to space
Some absorbed by the atmosphere
Some makes it to earths surface

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3
Q

Main contributed to greenhouse effect

A

Water vapour much in atmosphere

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4
Q

Net radiation budget

A

342 per year
31% immediately reflected back into space by clouds atmosphere and land shffCd
30% absorbed by tnsobere
Lost
Cloud tops
Cider regions
Atmosphere emits it up and down
Almost all is absorbed by sphere and emotes as infrared radiation
Less than one percent into chemical energy by photosynthesis
Latent heat

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5
Q

Albedo

A

Water 10%
Snow 90%
World 30%
Varies with seasons

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6
Q

Radiation

A

Radiant energy encounters particle, reflected or absorbed
Absorbed particles more movement
Areas of higher temp emit unrated radiation

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7
Q

Convection

A

Usually in fluids substances with no definite shape
Density less dense rise to top cools and downward
Water has higher heat capacity
Regions next to water more moderate weather

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8
Q

Atmosphere thermal energy

A

High temp near equator less dense air rises near pools cools nd falls
If earth nit soinning there would be continuous convection current between pole and equatorial region

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9
Q

Coriolanus effect

A

Difference in net radiation budget causes air to move directly north and south
Winds deflected right or left
Right north
Left south

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10
Q

Global wind patterns

A

Transfer energy from surplus to deficit regions

Caused by unequal heating in earths atmosphere

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11
Q

Trade winds

A

Coriolanus effect makes them to west

Higher attitude winds flow to poles due to warm rising air currents near Equator

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12
Q

Westerly winds

A

South and north
30 degrees north and south
Some warm air cooled enough to sink and move west toward equator
Rest of warm air moves towards poles and is moved west causes cold air to rush in and move eastwestetliers move easy

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13
Q

Polar easterlies

A

Near poles

Sinking cold air that are pushes western

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14
Q

Doldrums

A

Region of very low winds in a band about the equator

Center best nirtheast trade winds

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15
Q

Jet streams

A

Very high altitude
Not subject to friction faster than winds close to earth
Surface and density if troposphere slows global winds
Earth HD sevt 2-3 in north and south hemisphere
Convection currents form them
Speed location vary with amount of thermal energy
Cooler months faster and closer to equator

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16
Q

Jet stream effects

A

Changes affect formation if qualms storms cyclones
Ones in poles can affect movement of air in lower levels of atmosphere
Very important to predicting weather changes

17
Q

Hydrological cycle

Steps

A

Snow melts solod to liquid
Runs to oceans transpiration from plants
Precipitation returns
Evaporates liquid to vapour

18
Q

Hydro lid cycle thermal energy

A

When water changes stages thermal energy releases or absorbed
Liquid to solid released
Liquid to gas absorbed
Energy transferred without changes in temperature
Earth temp relatively stable

19
Q

Thermal energy transfer in oceans

A

Ocean currents main pathways for the transfer of thermal energy from warmer to cooler
Global winds blo to drive surface currents
Warmer are driven by trade winds 30 south and north westerly
Easterly in poles warm water to pole in mid latitudes
Cold water south in higher latitudes

20
Q

Ocean current Coriolanus effect

A

North veeet right
South veer left
Change direction when encounter a land mass
Transferred vertically in convection currents